.page {
    width: 19px;
    background-color: #f9f9f9;
    display: flex;
    justify-content: center;
    align-items: center;
}

.test-div {
    width: 19px;
    height: 30px;
    background-color: #666;
    overflow: hidden;
    display: flex;
}

.scroll-bg {
    width: 19px;
    height: auto;
}

.img {
    display: block;
    width: 19px;
    height: auto;
}